FastLeaf
Intermittent Fasting Timer
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
What stage is your body in right now? Your fast and body state, at a glance.
FastLeaf makes intermittent fasting simple and easy to stick with.
■ Live Fasting Timer
See exactly how long you've been fasting and how far you are from your goal. It stays accurate even if you close the app or restart your phone — elapsed time is based on your real start time.
■ Your Body, Stage by Stage
Digestion → blood sugar → fat burning → ketosis → autophagy. See what stage your body is in right now and how long until the next one.
■ 6 Proven Protocols
From 12:12 to 16:8, 18:6, 20:4 and OMAD (23:1). Pick the plan that fits you, beginner to advanced.
■ History & Streaks
Log every fast and build your streak. A 15-week heatmap and session history make consistency visible.
■ Insights
Average and longest fasts, goal completion rate and weekly trends — all in clear stats.
■ Reminders
Get notified when you reach your goal and when your eating window ends.
FastLeaf Pro (one-time lifetime purchase)
· All protocols · Unlimited history · Full body-state timeline · Advanced stats · Home widget · No ads
No subscription. Pay once, yours forever.
Note: This app is for general wellness information and is not medical advice. Consult a professional if you are pregnant or have a condition such as diabetes.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, SEONYONG LEE, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- SEONYONG LEE
- Size
- 28.1 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 13.0 or later.
- iPhone
Requires iOS 13.0 or later. - iPod touch
Requires iOS 13.0 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
9+
- 9+
- Contains
Advertising
Health or Wellness Topics
- In-App Purchases
Yes
- FastLeaf Pro $2.99
- Copyright
- © 2026 Hedvion